if you do have white "hairs" its females
still in Veg I belive or early pree flowering ..
when the nights become longer then the days they will flower .. plant homones changes ..
and around end september/eraly oktober they will be ready .. keep a eye on night frost .. if it hits early you want to haverst in time ..
Im in Denmark .. and when I did outdoor growing we did similar to you .. tho we made seedlings ready inside under some T8 in april
so we could plant em out in may .. veg for june/july and august they begon to flower .. 8-10 weeks later or before fist frost hit us we did haverst .. back then based on the hairs going brown (before internet aso) you schould get a cheap microcope (30x or more) so you can keep a eye on thricomes when its time for that ..
if that was my plant in my backyard ? I would cut Nitrogen more or less .. and start on a bloom nutriens and if you have it or can get it ..
get some black strap molesses .. its cheap .. and work wonders .. 1 ts spoon per gallon of water is enough .. will help the soils micro life and give the buds a sweet tast aso.
I also have some Bat guano Powder (high P. 15%) so I would give it a good 2 -3 table spoon top dressing of that around mid flowering (week 4)
can get it in most grow shops .. cost like 10£ for a kilo